It is also important to note that before 1983, there were no requirements for achieving 'city' status other than an approved city charter. This is what made it possible for several current cities such as Tangub or Canlaon to be conferred such a status despite their small population and locally generated income, which do not meet current standards. The relatively low income standard between 1992 and 2001 (which was PHP 20 million)[3 - also allowed several municipalities, such as Sipalay and Muñoz, to become cities despite not being able to meet the current PHP 100 million local income standard.